Massage gun



FIG. 1 is a first perspective view of a massage gun showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the massage gun which form no part of the claimed design. 

CLAIM The ornamental design for a massage gun, as shown and described. 